The patch titled
Char: genrtc, use wait_event_interruptible
has been added to the -mm tree. Its filename is
char-genrtc-use-wait_event_interruptible.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Char: genrtc, use wait_event_interruptible
From: Jiri Slaby <jirislaby@xxxxxxxxx>
genrtc, use wait_event_interruptible
Signed-off-by: Jiri Slaby <jirislaby@xxxxxxxxx>
Cc: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
Cc: Roman Zippel <zippel@xxxxxxxxxxxxxx>
Cc: David Brownell <david-b@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/char/genrtc.c | 22 +++++-----------------
1 files changed, 5 insertions(+), 17 deletions(-)
diff -puN drivers/char/genrtc.c~char-genrtc-use-wait_event_interruptible drivers/char/genrtc.c
--- a/drivers/char/genrtc.c~char-genrtc-use-wait_event_interruptible
+++ a/drivers/char/genrtc.c
@@ -173,7 +173,6 @@ static void gen_rtc_interrupt(unsigned l
static ssize_t gen_rtc_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
- DECLARE_WAITQUEUE(wait, current);
unsigned long data;
ssize_t retval;
@@ -183,18 +182,10 @@ static ssize_t gen_rtc_read(struct file
if (file->f_flags & O_NONBLOCK && !gen_rtc_irq_data)
return -EAGAIN;
- add_wait_queue(&gen_rtc_wait, &wait);
- retval = -ERESTARTSYS;
-
- while (1) {
- set_current_state(TASK_INTERRUPTIBLE);
- data = xchg(&gen_rtc_irq_data, 0);
- if (data)
- break;
- if (signal_pending(current))
- goto out;
- schedule();
- }
+ retval = wait_event_interruptible(gen_rtc_wait,
+ (data = xchg(&gen_rtc_irq_data, 0)));
+ if (retval)
+ goto out;
/* first test allows optimizer to nuke this case for 32-bit machines */
if (sizeof (int) != sizeof (long) && count == sizeof (unsigned int)) {
@@ -206,10 +197,7 @@ static ssize_t gen_rtc_read(struct file
retval = put_user(data, (unsigned long __user *)buf) ?:
sizeof(unsigned long);
}
- out:
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&gen_rtc_wait, &wait);
-
+out:
return retval;
}
_
Patches currently in -mm which might be from jirislaby@xxxxxxxxx are
rocketc-fix-unchecked-mutex_lock_interruptible.patch
char-n_hdlc-allow-restartsys-retval-of-tty-write.patch
char-mxser_new-fix-sparse-warning.patch
char-tty_ioctl-use-wait_event_interruptible_timeout.patch
char-tty_ioctl-little-whitespace-cleanup.patch
char-genrtc-use-wait_event_interruptible.patch
char-n_r3964-use-wait_event_interruptible.patch
char-ip2-use-msleep-for-sleeping.patch
char-cyclades-add-firmware-loading.patch
char-cyclades-fix-sparse-warning.patch
char-isicom-cleanup-locking.patch
char-isicom-del_timer-at-exit.patch
char-isicom-proper-variables-types.patch
char-moxa-eliminate-busy-waiting.patch
char-specialix-remove-busy-waiting.patch
char-riscom8-eliminate-busy-loop.patch
shrink_slab-handle-bad-shrinkers.patch
-
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